Install install backend headers under include/ceed/

This makes it possible to distribute source plugins that provide
additional backends. It's also used in MFEM, perhaps temporarily.

Deprecate ceed

Install install backend headers under include/ceed/

This makes it possible to distribute source plugins that provide
additional backends. It's also used in MFEM, perhaps temporarily.

Deprecate ceed-backend.h, which was not previously installed, but some
users accessed it from an in-place build.

Also install CUDA and HIP headers that allow users to provide CUfunction
and hipFunction_t.

Co-authored-by: Jeremy L. Thompson <jeremy.thompson@colorado.edu>
Requested-by: Andrew T. Barker <barker29@llnl.gov>

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Error Handling Improvement [fix #696] (#691)

* Operator - add operator/qfunction field compatibility checks

* QFunction - do not allow adding fields to QFunction in use with an operator

* Exam

Error Handling Improvement [fix #696] (#691)

* Operator - add operator/qfunction field compatibility checks

* QFunction - do not allow adding fields to QFunction in use with an operator

* Examples - add some extra exclusion markers in ceed example

* error - add error enum

* error - update error enum names and numbering

* error - use CEED_ERROR_BACKEND in all backend errors

* error - begin classifying interface errors

* error - update backends to use CEED_ERROR_SUCCESS and CeedChkBackend

* error - use new errors in gallery

* error - add some unsaved modifications

* error - improve documentation

* error - define CEED_ERROR_SUCCESS in GPU JiT; we really should have a common header to pipe defines to the JiT code

* error - more error code editing

* error - fix error string

* operator - fix setting field qpts

* basis - add input/output dimension error checking

* python - move basis utility methods to ceed object, no basis required or used

* python - force exit with negative error code

* make style-py

* rust - initial work to add error handling logic

* rust - add ceed.resource method

* rust - add results for methods that may fail

* rust - also format doctests

* minor - drop unused CeedChk()

* error - rename terminal/nonterminal to major/minor

* rust - set ErrorStore as default errorhandler

* python - revert error handing change for python

* python - use success error code from C bindings

* error - only upgrade error code in backend if positive

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headers - clearify includes to not rely on transitive includes (#701)

* headers - clearify includes to not rely on transitive includes

* style - add header recommendations from 'include-what-you-

headers - clearify includes to not rely on transitive includes (#701)

* headers - clearify includes to not rely on transitive includes

* style - add header recommendations from 'include-what-you-use'

* style - apply 'include-what-you-use' changes to CUDA backends

* style - 'include-what-you-use' for hip backends

* style - drop ceed.h includes in gallery qf source

* docs - add dev notes for header files

* style - header style and alphabetize

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Rust - add examples (#683)

* Rust - initial version of ex1

Example - move closure

Co-authored-by: Jed Brown <jed@jedbrown.org>

typo fix

Co-authored-by: Jed Brown <jed@jedbrown.org>

mi

Rust - add examples (#683)

* Rust - initial version of ex1

Example - move closure

Co-authored-by: Jed Brown <jed@jedbrown.org>

typo fix

Co-authored-by: Jed Brown <jed@jedbrown.org>

minor tidying

order -> degree

drop operator applicaiton messages

* rust: make top-level workspace and use libceed from path

This allows a single "cargo test" from the top level.

* rust: add version-sync (to help us remember when we publish a crate)

* examples - consistency update

* Rust - add Cargo.lock to top level gitignore

* rust - refactor example to add tests

* Rust - test and style from workspace

* Rust - update year in header

* Rust - add error values to Error, switch to String

* Rust - add input validation in check

* Rust - format volume output in example

* Rust - update example help output

* Rust - example tests rename to simplify

* Rust - split example 1 into 3 parts

* rust: std::sync::Once for CeedRegisterAll()

* Promote CeedRegisterAll() and CeedQFunctionRegisterAll() to User
* Guard calls to CeedInit() to avoid races in parallel testing

* Examples - update rust example to new builder syntax

* Examples - add rust ex2

* Rust - add CEED_STRIDES_BACKEND

* Examples - drop unused restriction in ceed ex2

* Rust - minor documentation update

* Rust - adopt convention of 'dimension-like' values all using usize; reduces casting

* Actions - add Rust code coverage

* Rust - fix usize conversion

* Rust - update casting between i32(C interface) and usize(Rust interface)

* Actions - include Rust doctests

* Actions - Rust doctest coverange only avaliable in nightly

* Rust - drop explict typing of values passed to C get* functions

* Rust - modify version numbers tests, cargo-tarpaulin and cargo have different calling paths in tests

* cargo fmt

* Examples - add separate Rust example quiet mode

* Actions - rustfmt not always avaliable on nightly

* Rust - simplify version tests

* Actions - add a few notes

* CodeCov - try adding gallery to 'fixes'

* CodeCov - drop some codecov noise in examples

* Examples - test all combinations in ex1/ex2

* Rust - test 3d examples without quiet flag

* Actions - use gcc-10 for compatibility in gcov reports

* Examples - test gallery in 1/2/3d in Rust ex

* Gitlab - also report gcov version

* JUnit - adjust indentation

* Gitlab - make it easier to find complier info in logs

* Tests - fix minor styling strangeness in t002

* Actions - only upload rust coverage

* Actions - exclude non-rust files from rust coverage

* Cov - exclude weak symbols code, not useful cov info

* Examples - clean up options creation for tests in Rust examples

* Examples - simplify tolerance for testing Rust examples

* cargo fmt

* Examples - another match

* Examples - common Rust example code in shared local crate

Co-authored-by: Jed Brown <jed@jedbrown.org>

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Add static library (libceed.a) [resolve #670]

We no longer use __attribute__((constructor)) to register backends and
gallery implementations because we can't ensure that the symbols are
linked into

Add static library (libceed.a) [resolve #670]

We no longer use __attribute__((constructor)) to register backends and
gallery implementations because we can't ensure that the symbols are
linked into applications that link the static library. We've switched to
creating CeedRegisterAll() and CeedQFunctionRegisterAll(), which are
called automatically by the library, and call weak symbols to register
all the backend/gallery implementations. This strategy was partly
motivated by not wanting to have preprocessor macros describing what is
available, and the associated need to recompile rather than just relink
when those macros change.

So we now have backends/ceed-backend-list.h that declares all the
backends wrapped in a macro. It is included by
backends/ceed-backend-weak.c to create weak definitions of all the
backends. In the makefile, we sort so this comes last when linking a
shared or static library, and thus these weak symbols will only be
picked up if they were not defined by the actual backend source files.
The same header is included (with different macro wrapping) in
interface/ceed-register.c, where CeedRegisterAll() is defined.

To add a new backend, one must do essentially the same registration
strategy as in the past, plus add one line to the common
ceed-backend-list.h.

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Op - add interface for multigrid level creation (#579)

* Op - add interface for multigrid level creation

* Op - add implementation for OperatorMultigridLevelCreate

* make style

* make tidy

Op - add interface for multigrid level creation (#579)

* Op - add interface for multigrid level creation

* Op - add implementation for OperatorMultigridLevelCreate

* make style

* make tidy

* Op - add test t550, fix errors

* Tests - add Fortran version of t550

* Tests - add t511 for testing tensor basis multigrid level setup

* make style and tidy

* Tests - fix t55* memory leaks

* Tests - add t552 for non-tensor basis multigrid levels

* CUDA - use CeedIntMax in shared CUDA backend

* Tests - add OCCA test exception for t55*

* Op - add lvector global prolongation multiplicity, simplifies user interface

* Solids - convert example to new interface

* make style

* Tests - convert t550 to multicomponent

* Solids - drop unused ceed_fine

* Python - add new multigrid level interface

* Python - fix operator wrap, use ceed python obj rather than ceed pointer

* Gallery - update comment slightly

* Tests - remove accidental duplicate test

* Multigrid - add size=2 case as well

* Operator - drop unneeded inline

* QFunction - simplify context ownership to match vector

* make style

* Python - update multigrid function signature

* Operator - refactor prolong/restrict qfunctions as scaling qfunctions

* Vector - add testing for reciprocal and add to Fortran/Python interfaces

* CUDA - add VectorReciprocal on device

* Gallery - drop specalized versions for 'Scale', wil fix performance hit later

* Hip - add vector reciprocal

* Operator - add more flexible prologation basis creation interface

* Vec - make sure data is set for VectorReciprocal

* Tests - drop ncomp for t550/1 so kernel is not too large for Magma backend

* Tests - add missing lcov markers

* make style

* Travis - allow ARM job to fail

* Travis - fix intel install

* Travis - try different install dir name for inteloneapi

* Travis - add ifort, ipp packages

* Tests - add missing lcov marker

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Gallery - always set size of identity qf in context, NULL doesn't always work on GPU

spellcheck

Add double inclusion guard in gallery/ header files

QFunction - Refactor CreateIdentity to include inmode and outmode

Gallery - update comments in Poisson 2/3D

Style - Fix indentation errors

Codecov - cover gallery

Merge pull request #273 from CEED/p-multigrid

P Multigrid Example

Make style

Gallery - update poisson 2d build comment

Add Identity QFunctions (#279)

* QFunction - add initial identity qfunction

* Identity - preformance optimization and add ctx memory free

* QFunction - Improve documentation and clean up destr

Add Identity QFunctions (#279)

* QFunction - add initial identity qfunction

* Identity - preformance optimization and add ctx memory free

* QFunction - Improve documentation and clean up destroy

* Doc - Improve identity QF and Operator documentation

* Gallery - doc and typo fixes

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QFunction Create by Name (#311)

This PR adds a QFunction gallery to libCEED with 1D, 2D, and 3D mass and Poisson operators.

Closes issue #37, issue #340

* Add QFunction gallery, rename focca

QFunction Create by Name (#311)

This PR adds a QFunction gallery to libCEED with 1D, 2D, and 3D mass and Poisson operators.

Closes issue #37, issue #340

* Add QFunction gallery, rename focca

* Gallery - add initial QFunctions

* Add a test for using the QF gallery

* Modify ex1 to use gallery

* Add multiple test configs to tap

* Move output to test directory

* Update junit

* Add OCCA galley exception

* Add ex2

* Update ex2 for dim->ncompx

* Gallery - modify to work for CUDA as is

* Update Documentation

* Gallery - typo fix

* Gallery - convention change, postappend qfunction family variant

* Gallery - update template with new name checking convention

* Gallery - condense diff3DBuild QFunction

* Gallery - rename diff -> poisson

* Gallery - clarify poisson3DBuild comment

* Gallery - use Pragma SIMD, store Qdata in Voigt convention

* Examples - Convert BP3-6 to Voigt convention

* Examples - add cl option to switch between header and gallery qfs in CEED examples

* Examples - clean up construction of QF name

* Gallery - Switch to PascalCase for gallery names

* Doc - fix function type page

* Interface - Make sure strncpy result is null terminated

* Gallery - Update Poisson 2/3D Apply to new QF body

* make style

* make style - fix worst style problems

* make style - add gallery to make style

* Doc - update documentation errors and inconsistencies

* Examples - test ex1 ex2 with and without gallary

* Examples - reduce testing of ex1/ex2 without gallery, clean up non-gallery qfunctions

* MFEM - revert another make style mistake

* Manual make style updates

* Doc - update function documentation page

* Style updates, document test numbering conventions

* doc: resolve ambiguous image location warning, allow more Dot nodes

* Tests - style and cast cleanup

* Tests - fix README indentation

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